The reality is that Nightmare Dungeons are dramatically over-tuned from where they actually need to be. Tier 100 Nightmare Dungeons are excruciatingly difficult for most Classes to actually be able to get through. Players are using Nightmare Dungeons as a way to level up their Glyphs, gain experience, and find loot. One thing that we plan on doing is we're going to make a reduction in the difficulty of some aspects of Nightmare Dungeons to retune some things.